SVU star was raised by bodybuilder Mickey Hargitay, she revealed in My Mom Jayne that her biological dad is entertainer Nelson Sardelli.

Mariska Hargitay’s fans believed she was the daughter of Hollywood icons Jayne Mansfield and Mickey Hargitay. However, in May 2025, the Law & Order: Special Victims Unit actress revealed a major family secret – sharing that her biological father is actually Nelson Sardelli.

Mariska Hargitay, Jayne Mansfield's daughter, reveals her biological father is singer Nelson Sardelli, not Mickey Hargitay, the man who raised her.